Stone canal

Definition

The stone canal is a tube-like structure in echinoderms that connects the madreporite to the ring canal. It plays a crucial role in the water vascular system, facilitating movement and feeding mechanisms.

5 Must Know Facts For Your Next Test

1. Echinoderms possess a unique water vascular system where the stone canal is integral.
2. The stone canal transports seawater from the madreporite to the internal water vascular system.
3. Calcareous deposits line the stone canal, giving it structural rigidity.
4. It is part of the hydraulic system that aids in locomotion and feeding in echinoderms.
5. The stone canal typically leads into the central ring canal surrounding the mouth.

Review Questions

Related terms

Madreporite: A sieve-like structure on echinoderms through which seawater enters their water vascular system.

Ring Canal:

A circular channel around an echinoderm's mouth that distributes water to radial canals.

Water Vascular System: A network of fluid-filled canals used by echinoderms for locomotion, feeding, and respiration.